/*
 * Copyright (c) 2011, Nikolaus Moll
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * * Neither the name of the gradecalculator.net nor the
 * names of its contributors may be used to endorse or promote products
 * derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */
package net.gradecalculator.core;

import net.gradecalculator.core.adapted.AdaptedModule;
import net.gradecalculator.core.interfaces.ICourse;
import net.gradecalculator.core.interfaces.IElectiveCoursesArea;
import net.gradecalculator.core.interfaces.IElectiveModulesArea;
import net.gradecalculator.core.interfaces.IModule;
import net.gradecalculator.core.interfaces.IModuleList;
import net.gradecalculator.core.interfaces.IModuleListItem;
import net.gradecalculator.core.interfaces.IStudent;
import net.gradecalculator.core.interfaces.results.IResult;

public final class AdaptedRegulationsUtil {
	private AdaptedRegulationsUtil() {}

	protected static void addModule(final AdaptedRegulations spo, final IModule m) {
		spo.addModule(new AdaptedModule(spo.getStudent(), m));
		for (final ICourse c : m.getCourses()) {
			final IResult r = spo.getStudent().getResult(c);
			if (r == null) {
				continue;
			}

			spo.removeUnassignedResult(r);
		}
	}

	protected static void addModules(final AdaptedRegulations spo, final IModuleList moduleList) {
		for (final IModuleListItem listItem : moduleList.getModules()) {
			if (listItem instanceof IElectiveCoursesArea) {
				// clone() ?
				final IElectiveCoursesArea im = (IElectiveCoursesArea) listItem;
				//				for (final IResult result : student.getResults()) {
				//					if (result.getCourseDescription() == null) {
				//						continue;
				//					}
				//
				//					// TODO check module name instead :-)
				//					if (!result.getCourseDescription().getName().equals(im.getName())) {
				//						continue;
				//					}
				//
				//					//im.addCourse();
				//				}
				addModule(spo, im);
				continue;
			}

			if (listItem instanceof IElectiveModulesArea) {
				final IElectiveModulesArea modulesArea = (IElectiveModulesArea) listItem;
				for (final IModuleList list : modulesArea.getModuleLists()) {
					// check selection ...
					if (!spo.getStudent().hasElectiveModulesArea(list)) {
						continue;
					}
					addModules(spo, list);
				}
				continue;
			}

			if (listItem instanceof IModule) {
				addModule(spo, (IModule) listItem);
				continue;
			}

			throw new IllegalArgumentException("Invalid module type");
		}
	}

	// TODO: Add "free" results to an individual module...
	public static AdaptedRegulations createSPO(final IStudent student) {
		final AdaptedRegulations result = new AdaptedRegulations(student);
		result.setUnassignedResults(student.getResults());
		if (student.getRegulations() != null) {
			addModules(result, student.getRegulations().getModuleList());
		}
		return result;
	}
}
